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Interfacial layer characterization in dental composite
Author(s) -
TruffierBoutry D.,
Place E.,
Devaux J.,
Leloup G.
Publication year - 2003
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1046/j.1365-2842.2003.01008.x
Subject(s) - adhesive , materials science , composite material , layer (electronics) , raman spectroscopy , saliva , composite number , adhesion , shear (geology) , smear layer , shear strength (soil) , dentin , chemistry , optics , geology , biochemistry , physics , soil science , soil water
summary Nowadays, dental resins find increasing use by practitioners. However, photopolymerization of such resins is limited to a so‐called ‘depth of cure’. To face this problem, dentists superimpose resin layers of limited depth. This technique raises the problem of the quality of interlayer. This paper aims at screening different cases of adhesion at the interface. Shear strength of such interfacial layers is tested in shear mode in various conditions (with or without an oxygen‐inhibited layer, or contaminated by saliva or water). Unexpectedly, the presence of an oxygen‐inhibition on the first layer, as assessed using micro‐Raman spectroscopy, induces higher shear strength. In this case, a cohesive break occurs while an adhesive one is observed in all the other cases.